Question

Calcule as frações

$\frac{1}{3} + \frac{1}{4} =$

$\frac{3}{4} - \frac{2}{3} =$


$\frac{2}{5} - \frac{1}{3} =$

Answer 1

1) $\frac{4+3}{12} = \frac{7}{12}$

2) $\frac{9-8}{12} = \frac{1}{12}$

3) $\frac{6-5}{15} = \frac{1}{15}$